Calculate the eccentric angle of the point (3,4)(3, 4)(3,4) on the ellipse x225+y216=1\frac{x^2}{25} + \frac{y^2}{16} = 125x2+16y2=1.
30∘30^\circ30∘
45∘45^\circ45∘
60∘60^\circ60∘
90∘90^\circ90∘